Clinical trials
Questionnaire clinical trials
Below are recruiting questionnaire clinical trials, each written for real people, not researchers. We’re tracking 1,169 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06625034RecruitingPhase 3
Comparing two radiation planning methods for prostate cancer
This trial tests two ways to plan radiation treatment for prostate cancer: one using a computer program (RapidPlan) and the other using human experts. The goal is to see if the computer-assisted method works as well or better.
Scottsdale, ArizonaAges 18 years+ - NCT06626178Recruiting
AI for preventing smoking-related diseases
This study uses artificial intelligence to analyze CT scans and other health data to better identify people at risk for smoking-related diseases like lung cancer. Researchers hope to improve early detection and prevention.
MilanAges 18 years+ - NCT06633224Recruiting
Fatigue and biology in cancer patients getting chemoradiation
This study looks at why some people feel very tired during cancer treatment. Researchers will collect blood and stool samples to study how the body responds to chemotherapy and radiation.
San Francisco, CaliforniaAges 18 years+ - NCT06636266Recruiting
Scottish chiropractors and students identity study
This study uses surveys to understand how Scottish chiropractors and chiropractic students see their professional identity. It may help you reflect on your role in healthcare.
EdinburghAges 18 years+ - NCT06639763Recruiting
Erectile aid use after gender-affirming surgery
This study looks at how transgender men and their partners use erectile aids after phalloplasty or metoidioplasty. It hopes to improve sexual health and satisfaction after surgery.
Ghent, East-FlandersAges 18 years+ - NCT06639776Recruiting
Sexual function after erectile implant in transgender people
This study looks at how well erection prostheses (implants that help with erections) work for transgender people after phalloplasty surgery. It aims to understand sexual functioning for both you and your partner.
Ghent, East-FlandersAges 18 years+ - NCT06643039Recruiting
Study on hospital-acquired respiratory virus infections
This trial looks at respiratory viruses caught in the hospital. If you are an adult patient or healthcare worker with flu-like symptoms that started while in the hospital, you may help researchers learn more about these infections.
BordeauxAges 18 years+ - NCT06651580Recruiting
Gene study for kids with pancreas problems
This study collects samples like blood or tissue from children with pancreatitis to look for gene changes that might raise their risk. It helps doctors learn more about why some children get pancreas inflammation.
Los Angeles, CaliforniaAges Up to 17 years - NCT06652204Recruiting
Questionnaire for caregivers of COPD patients
This study tests a French questionnaire for caregivers of people with COPD. It aims to better understand caregiver burden and support needs.
BrestAges 18 years+ - NCT06652763Recruiting
MRI scan for heart failure with normal pumping strength
This study uses a special MRI scan with a natural contrast agent (manganese) to look at how well the heart muscle works in people with heart failure who still have normal pumping strength. The goal is to learn more about why this type of heart failure happens.
LeicesterAges 18 years+ - NCT06668649Recruiting
Polish fatigue scale study for MS, ALS, or stroke
This study tests a Polish version of a scale that measures how tired people feel. It's for people with MS, ALS, or stroke, or healthy volunteers.
Krakow, Lesser Poland VoivodeshipAges 18 years+ - NCT06674863Recruiting
Support for Black men after prostate cancer treatment
This study tests a personalized care plan to help Black and African American men who have finished treatment for prostate cancer. The goal is to see if the plan improves health understanding and follow-up care.
Atlanta, GeorgiaAges 18 years+ - NCT06688968Recruiting
Music, thinking, and memory in Parkinson's and Alzheimer's
This study looks at how music engagement affects thinking and memory in people with Parkinson's or Alzheimer's disease. It may help researchers understand how music can support brain health as we age.
Montpellier, HéraultAges 60 years+ - NCT06692751Recruiting
Eye scan for microvascular angina
This study tests if a non-invasive eye scan (OCT-A) can detect changes in tiny blood vessels in the retina of people with chest pain caused by problems with the heart's small arteries (microvascular angina). If it works, it could be a simpler way to diagnose this condition.
DijonAges 18 years+ - NCT06698302Recruiting
Validation of a Spanish pain questionnaire (COMPAT-SF)
This study asks Spanish-speaking people with chronic pancreatitis to fill out a questionnaire about their pain. It aims to test whether a Spanish version of the COMPAT (a pain-assessment tool) works well.
Dallas, TexasAges 18 years+ - NCT06701487Recruiting
Brain learning mechanisms and substance use control
This study looks at how certain learning mechanisms in the brain (called Pavlovian conditioning) influence your ability to control alcohol or drug use. It may help explain why some people have trouble stopping, and could lead to better treatments. You'll fill out questionnaires and likely have a brain scan (MRI).
DresdenAges 18–65 - NCT06701500Recruiting
Study on decision making in alcohol use disorder
This study looks at how people with alcohol use disorder make decisions based on habits, goals, and automatic cues. It may help understand what drives drinking behavior.
DresdenAges 18–65 - NCT06704191RecruitingPhase 1/Phase 2
In-home chemo for bladder cancer trial
This trial tests if you can receive chemotherapy for bladder cancer at home instead of in the clinic. It is for people with early-stage bladder cancer who are already getting certain types of intravesical (inside the bladder) treatment.
Jacksonville, FloridaAges 18 years+ - NCT06706856Recruiting
Ultrasound test for fatty liver disease in kids
This study explores if a new ultrasound technique can detect fatty liver disease in children. It aims to find a simpler, safer way to check liver health without needing an MRI or biopsy.
La Jolla, CaliforniaAges 9–18 - NCT07685717RecruitingPhase 2
Pirtobrutinib for older adults with CLL
This trial tests a new pill, pirtobrutinib, for people 75 or older with chronic lymphocytic leukemia (CLL) who have never had treatment before. The goal is to see if it helps control the disease with manageable side effects.
Columbus, OhioAges 75 years+ - NCT03874052RecruitingPhase 1
Ruxolitinib plus venetoclax and azacitidine for relapsed AML
This early-phase study tests a combination of ruxolitinib with venetoclax, with or without azacitidine, for adults whose acute myeloid leukemia (AML) has come back or does not respond to treatment. It may help by stopping cancer cells from growing and improving blood counts, with the exact plan guided by the study arm you’re assigned to.
Columbus, OhioAges 18 years+ - NCT05941520RecruitingPhase 2
Acolbifene vs low-dose tamoxifen to prevent breast cancer
This Phase 2 trial compares acolbifene and low-dose tamoxifen to see which better lowers breast cancer risk in premenopausal women at high risk. You would be followed with health visits, blood tests, and a breast tissue sampling procedure.
Duarte, CaliforniaAges 35 years+ - NCT07302230Recruiting
Home exercise app for bladder cancer patients
This trial tests whether a home-based physical activity program using a smartphone app helps people with non-muscle invasive bladder cancer become more active compared to a health education group. It's designed for those who are not very active and want to improve their health.
Seattle, WashingtonAges 18 years+ - NCT07560982Recruiting
Improving medication adherence in advanced heart failure
This study looks at whether patients with severe heart failure follow their prescribed medications as recommended by treatment guidelines. The researchers want to understand what helps or prevents patients from taking their medicines correctly, which could improve their heart function and symptoms.
BergamoAges 18–75
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Common questions
- Are there clinical trials for questionnaire?
- Yes. Clin2 currently lists 1,169 recruiting questionnaire studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a questionnaire trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a questionnaire trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.